About: http://webisa.webdatacommons.org/275213136

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	quaternary ammonium group in which each R is an alkyl or hydroxyalkyl group or the three may be joined in a heterocyclic ring. `n` can be 1 or 2 methyl groups.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com